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  1. Qt
  2. QTBUG-60230

QNetworkAccessManager with QNetworkRequest::PreferCache fails if network not present

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      Description

      If:

      • a cache is specified for QNetworkAccessManager and
      • PreferCache is specified using QNetworkRequest's method setAttribute called like
        setAttribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferCache) and
      • the network/internet connection is not present

      then, the request will still fail when called from a RichText QML Text with

      QML QQuickText: Network access is disabled.

      However, if you modify the setAttribute call to use QNetworkRequest::AlwaysCache when the network isn't present, then it will work:

      cacheRequest.setAttribute(QNetworkRequest::CacheLoadControlAttribute,
          (networkAccessible() == QNetworkAccessManager::Accessible ?
              QNetworkRequest::PreferCache :
              QNetworkRequest::AlwaysCache));

      I would like to suggest that this is a bug, because if you say you would PreferCache, you don't want it to fail if you have a valid cache entry, but the network isn't present.

      For more code context, see this StackOverflow answer by jpnurmi

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            • Assignee:
              cnn Qt Core & Network
              Reporter:
              ross.rogers Ross Rogers
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                Updated:

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